(19)

(11)

EP 4 457 888 A1

(12)

(43) Date of publication: 06.11.2024 Bulletin 2024/45 (21) Application number: 22843155.7 (22) Date of filing: 20.12.2022

(51) International Patent Classification (IPC):  H01M 10/613(2014.01) H01M 10/6556(2014.01) H01M 10/6567(2014.01) A62C 3/16(2006.01) H01M 10/643(2014.01) H01M 10/6564(2014.01) H01M 50/213(2021.01) (52) Cooperative Patent Classification (CPC): H01M 10/643; H01M 50/213; H01M 10/613; H01M 10/6556; H01M 10/6564; A62C 3/16; H01M 50/505; H01M 10/6568; H01M 50/218; H01M 50/24; A62C 35/10; Y02E 60/10 (86) International application number: PCT/EP2022/086891 (87) International publication number: WO 2023/126245 (06.07.2023 Gazette 2023/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 28.12.2021 EP 21217991 (71) Applicant: Polarium Energy Solutions AB 113 63 Stockholm (SE)	(72) Inventors: KROHN, Ulf 113 63 Stockholm (SE) KULLBERG, Johan 113 63 Stockholm (SE) (74) Representative: AWA Sweden AB  Box 45086 104 30 Stockholm 104 30 Stockholm (SE)